Sieve.



PATBNTED SEPT. 29, 1903.

J. W. smutlJH,y

SIEVE.

APPLIouIoN Hum nu, 24. 190s.

No MODEL.

i UNITED vSIATES atented September i903',

JOHN WILLIAM SMITH, OF SEVVELLSVILLE, OHIO.

SIEVE.

SPECIFICATION forming part of Letters Patent No. 740,194, datedSeptember 29, 1903.

Application tiled March 24, 1903.

To all whom, it Ina/y concern:

Be it known that 1, .1 cnn WILLIAM SMITH, a citizen of the UnitedStates, residing at Sew-. ellsville, in the county of Belmont and Stateof Ohio, have invented a new and useful Sieve,

of which the following is a specification.

This invention relates to certain improvements in sitters, and moreparticularly to a reciprocating screen for sifting sand, coal,V ashes,and other material. i

The object of the invention is to provide a simple, inexpensive, andefficient device of this character by means of which sand and otherline'particles may be separated from the gravel or coarser material.y

A further object of the invention is to provide a reciprocating sievethe screen of'which may be readilyremoved to facilitate the cleaning ofthe same or to permit the insertionof screens of different mesh suitableto the char- `acter of the work to be performed.

A still further object is to pivotally connect' the screen-box to thereciprocating carriage, so that when the screening operation iscornpleted the box may be tilted and discharge the remaining gravel orother coarse material preparatory tointroducing a new charge.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended, itbeing understood that various changes in form, proportions, and minordetails of construction may be resorted to without departing from. theprinciple or sacricing any of the advantages of this invention.

In the accompanying drawings, Figure lis a longitudinal sectional Viewof a sifterconstructed in accordance with my invention. Fig. 2 is a sideelevation, partly in section, showing the arrangement of the sand-box.Fig. 3 is a transverse section of the same, and Fig. 4 is a detailperspective View of the Screen-box and screen detached.

Similar numerals of reference indicate corresponding parts in all theiigures of the drawings.

1 designates a frame or casing formed of wood or other suitablematerial, consisting of the side pieces 2, connected in any suitableSerial No. 149.376. (No model.)

manner to the bottom 3 and provided with legs or supports 4. The bottomof the frame is provided with oneor more openings 5, having chutes ordeiector-plates 6 secured to the side walls thereof and through whichthe sifted sand or other material is conveyed to suitable receptaclesadapted to receive the same. Journaled in suitable bearings in the sidepieces 2 and preferably at a point adjacent the end of the frame is acrank-shaft 7, having a balance-wheel S secured to one end thereof andhaving a pinion 9 at its opposite end, said pinion meshing with amaster-gear 10, keyed to shaft 11, also journaled in the side pieces 2of the frame. The mastergear is provided with a suitable crank-handle10', which may be used when the sieve is to be operated by hand; butthis may be removed and the machine operated by a powerbelt applied to abelt-wheel 11 on the main shaft 1l. The shaft 7 is provided with a crank12, to which is pivotally connected one end of a pitrnan 13, theopposite end thereof being pivotally connected' to a reciprocatingcarriage 14, mounted in guides 15, secured in any suitable manner to theside pieces of the frame. The carriage is in the form of an openrectangular frame and forms a support for a screen-box 16, connected atone end to the carriage by a hinge or pivot 17 and providedV at itsopposite end with a means for interlocking with the carriage, a hook 18and a keeper being shown in the present instance.

The screen-box is adapted to receive interchangeable sieves, which maybe removed for repairs when damaged or for the substitution of screensof different mesh in accordance with the character of the work to beperformed. Each screen 19Vhas a preterably rec'tangularfsupporting-frame20, sliding in suitable guides 21, arranged within the box 16, the rearend of the screen iitting Within a groove 22 in the rear end wall of thebox, the front end of the screen-frame being rabb'eted, as shown, so asto lie flush with the frontof the box, a button 23 being employed forlocking the screen within the box.

Slidably mounted within the frame 1 and arranged beneath the screen is adrawer or receptacle 24, adapted to receive the sifted IOO sand or othermaterial when it is inconvenient to convey the same through the openings5 to separate receptacles. v

In operation when it is desired to sieve large quantities of sand orother material the drawer 24 is withdrawn from over the openings 5, or,if desired, it may be entirely removed. The sand is then introduced inthe screen-box and by applying power to the belt-wheel 11 or by turningthe handle 10 the carriage carrying the sieveis reciprocated, the siftedmaterial passing through the openings 5 and the gravel or coarsematerialremaining in the screen-box, which may afterward be tilted anddischarged of its contents, as clearly shown in dotted lines in Fig. 2of the drawings. When it is merely desired to sieve small quantities,the drawer is slid forwardly to a position directly beneath the sieveand covering the openings in the bottom of the frame, the siftedmaterial being deposited in the drawer when the machine is operatedinstead of passing through said openings. The screen may be readilyremoved to facilitate the cleaning of the same or to permit theinsertion of screens of different mesh by releasing the button 23, saidscreen being slidably and removably secured within the box, as beforestated.

From the foregoing description it Will be seen that I have provided anextremely simple and inexpensive sifter adapted to be operated by eitherhand or power which may be used for sifting sand and other materials andwhich will thoroughly 'and effectively separate the line particlesfrom-the gravel or coarser material.

Having thus described the invention, what I claim, and desire to secureby Letters Patent, isl i In a sifter, the combination with a frame,0f asand-receiving receptacle slidably and removably mounted within theframe, dischargechutes arranged in the bottom of the frame, areciprocating carriage supported by the frame a screen-box pivoted tothe carriage, guides within the box, a removable screen slidably mountedon 'said guides, one end of the screen Iitting in a groove in the rearend of

